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CIS 18 controls
12.2: Establish and Maintain a Secure Network Architecture

Requirement description

Design and maintain a secure network architecture. A secure network architecture must address
segmentation, least privilege, and availability, at a minimum. Example implementations may include
documentation, policy, and design components.

How to fill the requirement

CIS 18 controls

12.2: Establish and Maintain a Secure Network Architecture

Task name
Priority
Status
Theme
Policy
Other requirements
Network areas and structurally secure network design
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Technical cyber security
Network security
21
requirements

Examples of other requirements this task affects

13.1.3: Segregation in networks
ISO 27001
PR.AC-5: Network integrity
NIST
8.22: Segregation of networks
ISO 27001
ARCHITECTURE-2: Implement Network Protections as an Element of the Cybersecurity Architecture
C2M2
CC6.6: Logical access security measures against threats from sources outside system boundries
SOC 2
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Network areas and structurally secure network design
1. Task description

An owner is defined for an organization's networks. The owner is responsible for planning the structure of the network and documenting it.

Separate network areas are used in network design as needed. Domain areas can be defined by e.g.:

  • trust level (eg public, workstations, server)
  • organizational units (eg HR, financial management)
  • or by some combination (for example, a server domain that is connected to multiple organizational units)

Separation can be implemented either with physically separate networks or with logically separate networks.

Separation of critical environments
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Development and cloud
Technical vulnerability management
8
requirements

Examples of other requirements this task affects

13.1.3: Segregation in networks
ISO 27001
PR.AC-5: Network integrity
NIST
8.22: Segregation of networks
ISO 27001
2.3.1: Establish centrally managed practices for security updates
NSM ICT-SP
12.8: Establish and Maintain Dedicated Computing Resources for All Administrative Work
CIS 18
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Separation of critical environments
1. Task description

Isolate technical environments where the consequences can be very damaging.

Network segmentation and filtering practices within the classification level
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Technical cyber security
Network security
11
requirements

Examples of other requirements this task affects

I02: Verkon vyöhykkeistäminen ja suodatussäännöstöt
Katakri
TEK-02: Tietoliikenne-verkon vyöhykkeistäminen
Julkri
ARCHITECTURE-2: Implement Network Protections as an Element of the Cybersecurity Architecture
C2M2
I-02: VÄHIMPIEN OIKEUKSIEN PERIAATE - TIETOLIIKENNE-VERKON VYÖHYKKEISTÄMINEN JA SUODATUSSÄÄNNÖSTÖT KO. TURVALLISUUSLUOKAN SISÄLLÄ
Katakri 2020
PR.AC-5: Network integrity (network segregation, network segmentation… ) is protected.
CyberFundamentals
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Network segmentation and filtering practices within the classification level
1. Task description

Tietoliikenneverkon vyöhykkeistäminen ja suodatussäännöstöt on toteutettava monitasoisen suojaamisen periaatteen mukaisesti.

Tietoliikenneverkon jakaminen ko. turvallisuusluokan sisällä erillisille verkkoalueille (vyöhykkeet ja segmentit) voi tarkoittaa esimerkiksi tietojen suojaamisen näkökulmasta tarkoituksenmukaista työasema- ja palvelinerottelua, kattaen myös mahdolliset hankekohtaiset erottelutarpeet.

Vaatimus voidaan täyttää alla mainituilla toimenpiteillä:

  • Tietoliikenneverkko on jaettu ko. turvallisuusluokan sisällä erillisiin verkko-alueisiin (vyöhykkeet, segmentit).
  • Verkkoalueiden välistä liikennettä rajoitetaan ja ympäristöön sisäänpäin tulevaan liikenteeseen noudatetaan default-deny sääntöä.
  • Tietojenkäsittely-ympäristössä on varauduttu yleisiin verkkohyökkäyksiin.

Tasks included in the policy

Task name
Priority
Status
Theme
Policy
Other requirements
No items found.

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